The lateral spread of dental caries is facilitated mostly by the_______________?
Correct answer: A. Dentinoenamel junction
- A. Dentinoenamel junction
- B. Enamel spindles
- C. Enamel lamellae
- D. Striae of Retzius
Explanation
The dentinoenamel junction provides a relatively weak, continuous pathway along which caries can spread laterally after crossing enamel. Enamel spindles, lamellae and Striae of Retzius are structural features but are not the main route of lateral spread.
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